榆林木热重及热解动力学分析  

Thermogravimetric and pyrolysis kinetic analysis of elmwood

作　　者：唐明天 马德鹏 张国凯[1] 孙杰[1] 

机构地区：[1]山东建筑大学热能学院,山东济南250101 [2]中国建筑第八工程局第一建设有限公司,山东济南250101

出　　处：《节能》2015年第2期24-26,2,共3页Energy Conservation

摘　　要：对榆林木采用热重分析,通过不同升温速率(10、30、50、80℃/min)下的热解实验,得到TGDTG曲线,分析榆林木的热解特性,结果表明:将榆林木的热解过程分为干燥脱水、挥发分热解、炭化三个阶段,随着升温速率的增加,挥发分热解温度范围扩大,最大失重率所对应的温度升高;采用Lyon积分算法,得到活化能数值随着热解转化的不同阶段而不同,为78.47~271.58k J/mol,炭化阶段活化能最高,其次是挥发分,最小的是脱水。同时验证了:榆林木的热解反应与阿尼乌斯的一阶单步反应具有良好线性相关度。Thermal gravimetric analysis is an important method in the study of biomass.Using this method on elmwood,through pyrolysis experimental analysis at different heating rates(10、30、50、80℃/min),get the TG-DTG curves to investigate the pyrolysis characteristics of elmwood.The results show that the pyrolysis process of elmwood are divided into three stages,dehydration,volatile pyrolysis,carbonization;with the increasing of heating rate,the major pyrolysis temperature range expansion,the temperature corresponding maximum weight loss rate rose;while taking advantage of Lyon integration algorithm for solving the activation energy of 78.47 ^- 271.58kJ/mol.Indicating arrhenius first-order single-step reaction with biomass pyrolysis reaction has good linearity.

关 键 词：榆林木 热重量分析 热解 Lyon积分算法 

分 类 号：TQ91[化学工程] TQ517